1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
KatRina [158]
3 years ago
11

During one cycle, a refrigerator removes 500 J from a cold reservoir and discharges 800 J to its hot reservoir. (a) What is its

coefficient of performance? (b) How much work per cycle does it require to operate?
Physics
1 answer:
Paraphin [41]3 years ago
5 0

Answer:

a)COP = 1.67

b) W = 300 J

Explanation:

given,

refrigerator removes = 500 J from a cold reservoir

discharge = 800 J to its hot reservoir

a) COP = \dfrac{Q}{w}      

   COP = \dfrac{500}{800-500}

   COP = 1.67                        

b) heat per cycle exhausted to the

     W + 500 = 800                        

     W = 800- 500                        

      W = 300 J                                  

You might be interested in
write a one or two summary paragraph discussing this experiment and the results use tye following questions 1 according to your
Monica [59]

Answer:heed

Explanation:

heed knows how to divide.

8 0
2 years ago
(Thought question) At noon On June 21 will the shadow length of 42 degrees north latitude be shorter or longer than it is on Mar
g100num [7]

Answer: Shorter

Explanation: Shadow is formed when an light source is obstructed by an opaque object. The closer the source, shorter is the length of the shadow. In fact, when the source is exactly overhead, no shadow of the object is formed.

June 21 marks the Summer solstice which means the Sun passes directly overhead Tropic of cancer (23.5° N) at noon. March 21 marks the equinox which means sun passes directly overhead equator (0°).

Shadow length of an object at 42° Northern latitude will be shorter on June 21 because the Sun will be closer to this latitude as compared to March 21.

5 0
2 years ago
How are the direction of the net force on an object and the direction of the object’s acceleration related?
Oksanka [162]

They're the same direction.

8 0
2 years ago
If 8000 C of charge pass through a section of wire in 2 minutes, what would the current be?
mars1129 [50]

Answer:

we know that current = charge/time

Explanation:

therefore,

A = 8000/120

A => 66.666.... amperes

8 0
3 years ago
The ____ is the place where position equals zero
Alexus [3.1K]
The answer to your question is the Origin 
7 0
3 years ago
Other questions:
  • 2CO + 2NO → 2CO2 + N2 is it balannced
    11·2 answers
  • In order to calculate momentum we must have the object's
    8·1 answer
  • Why is the electromagnetic spectrum called a spectrum?
    13·1 answer
  • You find yourself at a lever. A runaway trolley approaches five people who are tied to a set of tracks. Pulling the lever will d
    14·1 answer
  • An automatic dryer spins wet clothes at an angular speed of 5.2 rad/s. Starting from rest, the dryer reaches its operating speed
    13·1 answer
  • Calculate net force <br> 532N 215N
    9·1 answer
  • Two circular loops of wire, each containing a single turn, have the same radius of 5.10 cm and a common center. The planes of th
    9·1 answer
  • COULD SOMEONE PLS DO THESE FOR ME <br> I’LL LOVE U FOREVER AND EVER
    9·1 answer
  • A spring has a spring constant of 5N/cm. What is its extension when loaded with 15N?
    9·2 answers
  • Which three factors are used to calculate gravitational potential energy?
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!